A detection device for an automobile rear axle

Abstract

The utility model relates to the technical field of automobile manufacturing and quality inspection, especially relates to a detection equipment for automobile rear axle, including detection platform, the middle position of detection platform top is provided with high accuracy industrial vision detector, the lower part both sides of detection platform all are provided with positioning cylinder. Through setting pluggable clamping piece in the left and right sides of detection platform, and cooperate with the plug -in rod seat locking mechanism of electric guide rail drive, only need to insert the fixed base of adaptation into the positioning cylinder, then by the slide block drive plug -in rod seat automatic penetration through the through -hole and complete locking, can realize the quick installation and replacement of clamp, effectively solved the problem that traditional detection device is only applicable to single model rear axle, and the compatibility is poor, significantly improved the adaptability of equipment to multivariety, small -batch production.

Description

Technical Field

[0001] This utility model relates to the field of automobile manufacturing and quality inspection technology, and in particular to a testing device for automobile rear axles. Background Technology

[0002] With the rapid development of the automotive industry and the continuous improvement of production automation, the quality control requirements for key automotive components are becoming increasingly stringent. As an important component of the vehicle's transmission and driving system, the rear axle bears multiple functions, including supporting the vehicle's weight, transmitting driving torque, and withstanding complex loads. Its structural integrity and manufacturing precision directly affect the vehicle's safety, stability, and service life. During the manufacturing process of the rear axle, surface defects such as cracks, porosity, slag inclusions, poor weld formation, and deformation may be introduced in processes such as casting, welding, machining, and heat treatment. If these defects are not detected and eliminated in time, they may lead to breakage or failure of the rear axle during use, causing serious safety accidents. Therefore, conducting efficient and accurate appearance quality inspection of the rear axle before assembly is one of the key processes to ensure product quality.

[0003] Patent CN223229497U discloses an automotive rear axle inspection device. This device comprises two main parts: a support assembly and an inspection assembly. The support assembly uses a pair of fixed brackets to support and position the rear axle body. The inspection assembly integrates a hydraulically driven flaw detector and a flaw detector for non-destructive testing of the internal structure of the rear axle housing. It is also equipped with two vision cameras and vision inspection equipment to acquire images of the rear axle's outer surface, thereby identifying macroscopic defects such as surface cracks. It possesses a certain degree of automated inspection capability. However, it still has some shortcomings in practical applications. The fixed brackets of the support assembly are a rigid, fixed structure design that cannot be disassembled or replaced, making it only suitable for rear axle products of specific models and sizes. It lacks compatibility with workpieces of different specifications and cannot meet the needs of flexible production with multiple varieties and small batches.

[0004] Therefore, there is an urgent need to provide a testing device for automotive rear axles that can achieve modular quick-change of fixtures to adapt to different models and sizes of rear axles. Utility Model Content

[0005] In order to overcome the shortcomings of existing automotive rear axle testing devices, such as poor versatility, inability to replace support and clamping structures, and difficulty in adapting to the testing needs of multiple workpiece models, this utility model provides a testing device for automotive rear axles that can realize modular quick-change of clamps to adapt to different models and sizes of rear axles.

[0006] To address the aforementioned issues, this utility model employs the following technical solution: A testing device for automotive rear axles includes a testing platform. A high-precision industrial vision detector is positioned at the top center of the testing platform. Positioning cylinders are located on both sides of the lower part of the testing platform. Each positioning cylinder is a vertically upward sleeve structure. A fixed seat is inserted into each positioning cylinder. A symmetrically arranged clamping member is slidably mounted on the fixed seat. An elastic member is sleeved on each clamping member. Both ends of the elastic member are fixedly connected to the fixed seat and the clamping member, respectively. A horizontally arranged electric guide rail is positioned at the lower center of the testing platform. A slider is slidably mounted on the main body of the electric guide rail. A rod seat is fixedly connected to the slider. Coaxially aligned through holes are provided on the positioning cylinders and the fixed seat.

[0007] As an improvement to the above solution, the inner end clamping surface of the clamping member is provided with transverse anti-slip texture.

[0008] As an improvement to the above solution, the outer end of the clamping member is provided with a handle structure.

[0009] As an improvement to the above solution, a mounting frame is fixedly connected to the lower part of the testing platform. A horizontally arranged guide rod is fixedly connected to one side of the mounting frame. A sliding frame is slidably mounted on the guide rod. The sliding frame forms a guiding engagement with the guide rod through a guide hole. A push plate is fixedly connected to the upper part of the sliding frame, and the push plate extends upward to the height area of ​​the clamping component. A symmetrically arranged one-way screw is rotatably mounted on the other side of the mounting frame. A threaded hole matching the one-way screw is opened on the sliding frame, so that a helical pair transmission connection is formed between the sliding frame and the one-way screw. A dual-axis motor is mounted on the mounting frame. The two output shafts of the dual-axis motor are fixedly connected to the adjacent one-way screws through couplings.

[0010] As an improvement to the above solution, audible and visual alarms are installed on both sides of the top of the detection platform, and the audible and visual alarms are electrically connected to the high-precision industrial vision detector.

[0011] As an improvement to the above solution, a protective pad is provided on the inner side of the push plate.

[0012] Compared with the prior art, the present invention has the following technical effects: 1. By setting pluggable clamping parts on the left and right sides of the testing table and cooperating with the electric guide rail driven plug seat locking mechanism, it is only necessary to insert the matching fixed seat into the positioning cylinder, and then the slider drives the plug seat to automatically pass into the through hole to complete the locking, so as to realize the quick installation and replacement of the fixture, effectively solving the problem that the traditional testing device is only suitable for a single model of rear axle and has poor compatibility, and significantly improving the equipment's adaptability to multi-variety and small-batch production.

[0013] 2. By setting a dual-axis motor to drive the unidirectional screw to rotate, the sliding frames on both sides are controlled to feed towards the center along the guide rod, pushing the push plate to automatically adjust the rear axle of the car to the center position of the equipment. This centering process is completed automatically, eliminating manual placement deviations and ensuring that the workpiece is at a uniform reference during each inspection. This is beneficial to improving the consistency of image acquisition and the repeatability of inspection results. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0015] Figure 2 This is a three-dimensional structural diagram of the components of this utility model, including the detection platform, high-precision industrial vision detector, and mounting base.

[0016] Figure 3 This is a three-dimensional structural diagram of the clamping component, elastic component, and electric guide rail of this utility model.

[0017] Figure 4 This is a three-dimensional structural diagram of the mounting bracket, guide rod, and one-way screw of this utility model.

[0018] Figure 5 This is a three-dimensional structural diagram of the components of this utility model, including the testing platform, the audible and visual warning device, and the protective pad.

[0019] In the attached diagram, the following labels are used: 1-Detection table, 101-Positioning cylinder, 2-High-precision industrial vision detector, 3-Fixed base, 4-Clamping component, 5-Elastic component, 6-Electric guide rail, 7-Slider, 8-Plug seat, 9-Mounting bracket, 10-Guide rod, 11-One-way screw, 12-Dual-axis motor, 13-Sliding frame, 14-Push plate, 15-Audible and visual warning device, 16-Protective pad. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Example 1: Please refer to Figure 1 , Figure 2 , Figure 3 and Figure 5A testing device for automotive rear axles includes a testing platform 1. A high-precision industrial vision detector 2 is installed at the top center of the testing platform 1 to acquire images of the automotive rear axle surface and transmit them to a control system for defect analysis, such as cracks, deformation, poor welding, and other quality anomalies. Positioning cylinders 101 are installed on both the left and right sides of the lower part of the testing platform 1. Each positioning cylinder 101 is a vertically upward sleeve structure. A fixing seat 3 is inserted into each positioning cylinder 101. Clamping members 4 are slidably arranged in a symmetrical manner on the fixing seat 3. The inner clamping surface of the clamping member 4 is provided with transverse anti-slip textures to increase the friction coefficient between the clamping member 4 and the contact surface with the automotive rear axle, improving clamping stability and preventing the workpiece from sliding or being damaged during testing. A pull handle extends from the outer end of the clamping member 4, allowing the operator to manually pull the clamping member 4 to overcome the elastic force of an elastic element 5 and achieve an opening action when clamping the workpiece. An elastic element 5 is sleeved on the clamping member 4, with its front and rear ends respectively connected to the fixing seat 3 and the... The clamping component 4 is fixedly connected to apply a continuous inward preload to the clamping component 4, thereby driving the clamping component 4 to automatically close and generate a stable clamping force when the external force is released. A horizontally arranged electric guide rail 6 is provided at the lower middle position of the detection table 1. Two sliders 7 are slidably arranged on the main body of the electric guide rail 6. Each slider 7 is fixedly connected to a plug seat 8. The positioning cylinder 101 and the fixed seat 3 are provided with coaxially aligned through holes. When the fixed seat 3 is inserted into the position, the plug seat 8 can move with the slider 7 and pass into the through hole to achieve mechanical locking of the fixed seat 3 and prevent it from loosening or shifting during the detection process. Audible and visual alarms 15 are installed on the left and right sides of the top of the detection table 1. The audible and visual alarms 15 are electrically connected to the high-precision industrial vision detector 2. When the detection result is unqualified, the high-precision industrial vision detector 2 triggers the audible and visual alarms 15 to emit a red flash and start a buzzer alarm. If the detection is qualified, it remains silent, realizing intuitive quality status feedback.

[0022] When using this device, select a matching clamp according to the specific model and size parameters of the rear axle of the vehicle to be tested. Insert the clamping component 4 and its fixing seat 3 into the positioning cylinders 101 on both sides of the testing table 1 until the predetermined installation depth is reached. Start the electric guide rail 6 to control the two sliders 7 to move outward synchronously, driving the insertion rod seat 8 to insert into the through-hole on the positioning cylinder 101 and the fixing seat 3, completing the spatial limitation and mechanical locking of the fixing seat 3, ensuring that the clamping component 4 will not come out or shift due to force during subsequent use. Next, perform the clamping and fixing operation. The operator holds the handle of the clamping component 4, overcomes the elastic force of the elastic element 5, and pulls the two corresponding clamping components 4 outward a certain distance so that the clamping area is larger than the width of the rear axle of the vehicle. Then, place the rear axle of the vehicle to be tested smoothly between the two clamping components 4, release the handle, and under the restoring force of the elastic element 5, the two clamping components 4 automatically close towards the center, clamping the rear axle of the vehicle. The ends are clamped, with transverse anti-slip textures effectively preventing slippage and ensuring clamping reliability. After both ends of the rear axle are clamped, the high-precision industrial vision detector 2 is activated to acquire images of key areas of the rear axle and send the data to the image processing system for algorithm analysis to determine whether there are any appearance defects or geometric deviations. If the high-precision industrial vision detector 2 determines that it is a defective product, it will immediately activate the audible and visual alarm 15 to issue an audible and visual alarm to prompt the operator to handle it in time. If it is determined to be a qualified product, there will be no warning output, and the process can proceed to the next step. When it is necessary to replace the clamping parts 4 with different specifications to adapt to other models of rear axles, the electric guide rail 6 is reversed, causing the slider 7 to drive the insertion rod seat 8 to retract from the through insertion hole, releasing the lock on the fixed seat 3. At this time, the operator can easily pull out the fixed seat 3 and clamping parts 4 to complete the quick changeover operation, significantly improving the production capacity and multi-variety adaptability of the equipment.

[0023] Example 2: Based on Example 1, please refer to... Figure 4 and Figure 5The lower part of the testing platform 1 is fixedly connected to a mounting bracket 9. A horizontally arranged guide rod 10 is fixedly connected to the rear side of the mounting bracket 9. A sliding frame 13 is slidably mounted on the guide rod 10. The sliding frame 13 forms a guiding engagement with the guide rod 10 through guide holes, thereby ensuring that the sliding frame 13 can only perform linear reciprocating motion along the axial direction of the guide rod 10, limiting rotation and sway, and ensuring stable operation and positioning accuracy. A push plate 14 is fixedly connected to the upper part of the sliding frame 13, and the push plate 14 extends upward to the height area of ​​the clamping member 4. A protective pad 16 is provided on the inner side of the push plate 14 to form a buffer layer, which can provide moderate friction to assist positioning and prevent damage during excessive pushing. To prevent damage to the rear axle surface during the process, the mounting bracket 9 has two symmetrically arranged one-way screws 11 on its rear side. The threads of the two one-way screws 11 have opposite directions. The sliding bracket 13 has threaded holes that match the one-way screws 11, forming a helical transmission connection between the sliding bracket 13 and the one-way screws 11. A dual-axis motor 12 is mounted on the mounting bracket 9. The output shafts at both ends of the dual-axis motor 12 are fixedly connected to the adjacent one-way screws 11 through couplings. When the dual-axis motor 12 rotates forward, the sliding brackets 13 on both sides move towards the center simultaneously. When it rotates in reverse, they retract in the opposite direction, realizing a bidirectional adjustment function.

[0024] In actual operation, after the rear axle of the vehicle is placed between the left and right clamping parts 4 and initially clamped, there may be axial positional deviation or incomplete centering, affecting the imaging symmetry and recognition accuracy of the visual inspection system. At this time, the dual-axis motor 12 is started, and its two output shafts rotate synchronously, driving the two one-way screws 11 to rotate in the same direction through the coupling. Since the threaded hole on the sliding frame 13 meshes with the one-way screw 11, and the sliding frame 13 is constrained by the guide rod 10 and can only move horizontally, the two sliding frames 13 move synchronously along the guide rod 10 under the action of helical transmission. The workpiece is fed in the center direction. As the sliding frame 13 moves inward, the push plate 14 fixed thereon approaches the end of the rear axle of the car. After contact, a uniform pushing force is applied to gradually push the workpiece along the axial direction to the center position of the equipment, realizing automatic centering and positioning. This process can be carried out within the fine adjustment range allowed by the elastic clamping member 4 without affecting the established clamping stability. After centering is completed, the dual-axis motor 12 stops running, and the push plate 14 remains in the positioning state until the inspection is completed. After the inspection is completed, the dual-axis motor 12 reverses and drives the sliding frame 13 to return to the initial position, making room for the next clamping.

[0025] Although this disclosure has been shown and described with reference to specific exemplary embodiments thereof, those skilled in the art will understand that various changes in form and detail may be made to this disclosure without departing from the spirit and scope of the disclosure as defined by the appended claims and their equivalents. Therefore, the scope of this disclosure should not be limited to the above embodiments, but should be defined not only by the appended claims, but also by their equivalents.

Claims

1. A testing device for a rear axle of an automobile, comprising a testing platform (1), wherein a high-precision industrial vision detector (2) is disposed at the top center of the testing platform (1), and positioning cylinders (101) are disposed on both sides of the lower part of the testing platform (1), each positioning cylinder (101) being a vertically upward sleeve structure, characterized in that, A fixed base (3) is installed in the positioning cylinder (101). A clamping member (4) is slidably arranged on the fixed base (3). An elastic member (5) is sleeved on the clamping member (4). The two ends of the elastic member (5) are fixedly connected to the fixed base (3) and the clamping member (4) respectively. A horizontally arranged electric guide rail (6) is provided at the middle position of the lower part of the detection table (1). A slider (7) is slidably arranged on the track body of the electric guide rail (6). A plug seat (8) is fixedly connected to the slider (7). Coaxially aligned through holes are opened on the positioning cylinder (101) and the fixed base (3).

2. The testing equipment for automobile rear axles according to claim 1, characterized in that, The inner end clamping surface of the clamping member (4) is provided with transverse anti-slip texture.

3. The testing equipment for automobile rear axles according to claim 2, characterized in that, The outer end of the clamping member (4) is provided with a handle structure.

4. The testing equipment for a vehicle rear axle according to claim 3, characterized in that, The testing platform (1) is fixedly connected to a mounting frame (9) at its lower part. A horizontally arranged guide rod (10) is fixedly connected to one side of the mounting frame (9). A sliding frame (13) is slidably arranged on the guide rod (10). The sliding frame (13) forms a guiding fit with the guide rod (10) by opening a guide hole. A push plate (14) is fixedly connected to the upper part of the sliding frame (13), and the push plate (14) extends upward to the height area of ​​the clamping member (4). A symmetrically arranged one-way screw (11) is rotatably arranged on the other side of the mounting frame (9). A threaded hole matching the one-way screw (11) is opened on the sliding frame (13), so that a helical pair transmission connection is formed between the sliding frame (13) and the one-way screw (11). A dual-axis motor (12) is installed on the mounting frame (9). The two output shafts of the dual-axis motor (12) are fixedly connected to the adjacent one-way screw (11) through couplings.

5. The testing equipment for a vehicle rear axle according to claim 4, characterized in that, The detection platform (1) is equipped with audible and visual alarms (15) on both sides of its top, and the audible and visual alarms (15) are electrically connected to the high-precision industrial vision detector (2).

6. The testing equipment for a vehicle rear axle according to claim 5, characterized in that, The inner side of the push plate (14) is provided with a protective pad (16).

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